From RROCA-info
GOSHAWK 2 (2 wheel brake chassis) and INDIA 4 (4 wheel brake chassis)
Total Number produced: 2,940
- Original Specification (Produced 1922-1925)
6 cylinders, overhead valves, 3 x 4½"; (3127cc), single plate clutch, 3 speeds, coil ignition with most supplied with standby magneto ignition system, independent foot and hand brakes acting on rear wheels, semi-elliptic front and rear suspension, 54" track, wheelbase 129", chassis weight 2200 lbs. 23" dia wheels with 32x4 1/2 or 33x5 straight sided Dunlop tyres. 13 External steel shutters with round edge radiator, 13 nickel shutters optional in 1923 and standard in 1924 with square edge radiator. 10-spoke steel Dunlop artillery wheels optional extra (56" track), 70mph speedo. Design Chassis Number given on design plans. 13 not used in Chassis Plate numbers. Works Erection Number is 20 larger and stamped on chassis dumbiron and shown on chassis cards.
- Aug 1925 Major revisions to chassis (INDIA 4)
Front wheel brakes with servo assist, 4 speed gearbox, 2" longer front springs, braced chassis rails, 14 shutters enclosed in radiator, wider rear brakes, double spline hubs, 2" wider track to 56", 12-spoke Dunlop artillery wheels optional with revised hubs/brakes to keep track at 56".
| Chassis Plate No. | Year | Series | Design Chassis No. (#) | Works Erection No. | Comments |
|---|---|---|---|---|---|
| 40-G-1 to 50-G-0 | Sep-22 | A (250) | 1-250 | 21-270 | Lucas lighting set R55 head, R241 side & TF201 tail light |
| 50-S-1 to 60-S-0 | 1923 | From 55s5 revised distrib contacts & handbrake lever to stop rattles | |||
| 60-H-1 to 65-H-0 | 1923 | ||||
| 65-H-1 to 70-H-0 | Mar-23 | B (250) | 251-500 | 271-520 | Standby EO6 magneto available. |
| 70-A-1 to 80-A-0 | 1923 | From #401 Coil D51041 relocated to timing case. Revised cyl head & block to suit coil location. | |||
| 80-K-1 to 90-K-0 | 1923 | ||||
| GA 1-81 | Sep-23 | C (250) | 501-750 | 521-770 | New block to suit new 3 bolt fan; larger dia. water outlets. Square edge radiator & nickel shutters std GA12 |
| GF 1-81 | 1923/24 | Plugs fitted to front engine suspension tube, Engine torque reaction dampers std from GF70 | |||
| GH 1-81 | 1924 | RB60 (RB65) headlights from #661; | |||
| GAK 1-8 | 1924 | Watford RO1 magneto std GH58; 1/2" taller stabilite coil from 742# | |||
| GAK 8-81 | Jan-24 | D (250) | 751-1000 | 771-1020 | Relocated handbrake lever to driver's side from GAK32 |
| GMK 1-81 | 1924 | Pt D - shortened undershields & lagged exhaust downpipe | |||
| GRK 1-84 | 1924 | ||||
| GDK 1-15 | |||||
| GDK 16-81 | Sep-24 | E (200) | 1001-1200 | 1021-1220 | Barrel shape carb intake &.Lucas B211S (B210) divers helmet tail lamp standard from #1001 |
| GLK 1-81 | 1925 | S220 taillamp for Continental cars | |||
| GNK 1-54 | |||||
| GNK 55-94 | Mar-25 | pt F (39) | 1201-1240 | 1221-1260 | Lucas R440 sidelamp std from #1201 |
| INDIA 4 | 1925-1929 | ||||
| GPK 1-81 | Jul-25 | pt F (161) | 1241-1400 | 1261-1420 | Very short undershield at front of engine, separate g'box shield |
| GSK 1-80 | |||||
| GSK 81 | Nov-25 | G (200) | 1401-1600 | 1421-1620 | 80MPH speedo with trip |
| GCK 1-81 | 1925/26 | ||||
| GOK 1-81 | 1926 | Double cone thrust bearing instead of flat thrust washers in diff from GOK44 | |||
| GZK 1-37 | 1926 | Slipper drive giving Lighter 8lb (+/-2lb) torque at 17" radius | |||
| GZK 38-81 | Mar-26 | H (200) | 1601-1800 | 1621 - 1820 | |
| GUK 1-81 | 1926 | Improved oil supply to slipper drive | |||
| GYK 1-92 | 1926 | Additional ventilation in distrib cap via 2 vents, drilled holes to earlier caps. GUK55, GYK44, GYK49 wellbase wheels | |||
| GMJ 1-81 | Sep-26 | J (200) | 1801-2000 | 1821 - 2020 | Well base wheels std, 5 1/4" x 21" medium pressure tyres, Round base coil, front hydraulic shock dampers, screw in top of carb & plain float lid and no sight glass |
| GHJ 1-81 | 1927 | Restrictor valve in Autovac, Elliott ammeter. New steering box with outside drop arm from GHJ72 | |||
| GAJ 1-41 | 1927 | Modified Engine timing | |||
| GAJ 42-81 | May-27 | K (200) | 2001-2200 | 2021 - 2220 | Pawled cover with filter in float chamber; battery on extra cross member; Front brake squeal damper from GAJ73 |
| GRJ 1-81 | 1927 | New cylinder head E54381 with longer pushrods, 3 prong starter handle | |||
| GUJ 1-81 | 1927 | Carb float chamber filter deleted from GUJ61 JUBILEE radiator hose clips used from 176 in 'K' | |||
| GXL 1-82 | Oct-27 | L (200) | 2201-2400 | 2221 - 2420 | New manifolds with 2 bolt hotspot; Zenith petrol filter, 2 gal reserve petrol tank with screw on cap |
| GYL 1-82 | 1928 | Revised starter motor clutch. Rear hydraulic shock dampers | |||
| GWL 1-41 | 1928 | Revised distributer with new points | |||
| GBM 1-82 | 1928 | M (200) | 2401-2600 | 2421 - 2620 | Oval web crankshaft. Improved steering. Watford clock supplied after GBM16 & before GBM36 |
| GKM 1-82 | 1928 | To special order: GBM40 - vertical shutters. GYL2, GBM16 with 15 horizontal shutters. 1.5" higher radiator & 3/4" higher scuttle | |||
| GTM 1-41 | 1928 | Smaller diameter oil gauge | |||
| GFN 1-82 | 1928/29 | N (200) | 2601-2800 | 2621 -2820 | From GFN71: Vertical radiator shutters, Mixture control on steering column, revised starter motor with 3 cork washers; 600x20 wheels, nickel plated carb; |
| GLN 1-87 | 1929 | 2" wider & 3/4" higher scuttle with 1.5" higher radiator std from GLN22 | |||
| GEN 1-41 | 1929 | R330 sidelights | |||
| GEN 42-82x | Feb-29 | OA (100) | 2801-2900 | 2821 - 2920 | External oil pipe from front to rear below manifolds. Carb jet connecting arm relocated over air intake; Cad plated springs from GEN72 |
| GVO 1-81 | 1929 | Partial central lubrication (GVO11), Enots petrol filter & KS gauge. 'Mechanics' prop shaft. Cast scuttle | |||
| GXO 1-10 | 1929 | 30 of GVO & GXO Series fitted with 20/25 bored engine & renumbered as 20/25. 600x19" wheels from 7/9/29 |